JP2012511650A - Temperature-sensitive fluid flow interrupting device - Google Patents

Abstract

The temperature-sensitive fluid flow interrupting device includes a housing provided between an inflow portion and a discharge portion of a fluid flow pipe in which a flow fluid flows inside, and the flow fluid flows into the housing in response to a change in internal pressure. A pressure difference is generated in the valve block in accordance with a temperature change of a valve block provided in the housing so as to discharge a part of the flow fluid to the outside of the housing and a temperature-sensitive fluid filled therein. Includes a temperature sensor. If the temperature of the external temperature becomes low and the temperature of the temperature-sensitive fluid reaches the set temperature, a part of the flow fluid in the housing is discharged to the outside to prevent the fluid flow pipe from being frozen.
[Selection] Figure 1

Description

  The present invention relates to a temperature-sensitive fluid flow interrupting device, and more specifically, when the temperature of the temperature-sensitive fluid in the temperature-sensitive portion reaches a set temperature, a small amount of the flow fluid inside the fluid flow tube is discharged and the fluid flow tube is The present invention relates to a temperature-sensitive fluid flow interrupting device that can prevent freezing.

  In general, water inside water pipes, which are typical fluid flow pipes, freezes when the outside temperature becomes very low as in winter, and the volume increases when water freezes in the pipes in this way. The pipe will crack. Therefore, various apparatuses and methods for preventing this have been used.

  Many devices and methods for preventing freezing of a fluid flow pipe sense the temperature inside the fluid flow pipe, and when the temperature is below a predetermined temperature, external power, for example, a power supply is installed in the fluid flow pipe. The fluid flow pipe is heated so that it does not freeze. However, such an apparatus and method have a problem that the configuration is complicated and the power consumption is severe, so that the maintenance cost is high.

  Accordingly, an object of the present invention is to provide a small amount of flow fluid to the outside of the fluid flow pipe without supplying power from the outside if the temperature of the temperature sensitive fluid in the temperature sensitive portion arranged in the fluid flow pipe reaches the set temperature. It is an object of the present invention to provide a temperature sensitive fluid flow interrupting device that prevents the fluid flow pipe from being frozen by discharging.

  A temperature-sensitive fluid flow interrupting device according to an aspect of the present invention for achieving the above-described object includes a housing provided between an inlet portion and an outlet portion of a fluid flow pipe through which a fluid flows, and the housing. A valve block provided in the housing so as to flow in a flow fluid and discharge a part of the flow fluid to the outside in response to a change in internal pressure, and a temperature change of the temperature-sensitive fluid filled in the interior And a temperature sensor that generates a pressure difference in the valve block.

  According to the present invention, when the temperature of the external temperature becomes low and the temperature of the temperature-sensitive fluid filled in the temperature-sensitive part reaches the set temperature, a small amount of flowing fluid in the housing is discharged to the outside. Can prevent freezing of the flow tube.

It is the schematic which shows the structure of the temperature sensitive type fluid flow interruption apparatus by 1st Embodiment of this invention. It is a figure which shows the state which a temperature sensitive device expand | swells when the temperature of a temperature sensitive fluid reaches | attains preset temperature with the temperature sensitive type fluid flow interruption apparatus of FIG. It is the schematic which shows the structure of the temperature sensitive type fluid flow interruption apparatus by 2nd Embodiment of this invention. FIG. 4 is a diagram illustrating a state in which a temperature sensitive device expands when the temperature of the temperature sensitive fluid reaches a set temperature in the temperature sensitive fluid flow interrupting device of FIG. 3. FIG. 4 is a detailed view of a buffer chamber provided in a second flow path between the upper discharge pipe and the fluid storage chamber of the temperature-sensitive fluid flow interrupting device of FIG. 3. It is the schematic which shows the structure of the temperature sensitive type fluid flow interruption apparatus by 3rd Embodiment of this invention. FIG. 7 is a diagram illustrating a state in which the temperature sensitive device expands when the temperature of the temperature sensitive fluid reaches the set temperature in the temperature sensitive fluid flow interrupting device of FIG. 6. It is detail drawing of the holder which varies the preset temperature of a temperature sensitive fluid. It is the schematic which shows the structure of the temperature sensitive type fluid flow interruption apparatus by 4th Embodiment of this invention. FIG. 10 is a schematic diagram illustrating a modified embodiment of a temperature sensitive portion in the temperature sensitive fluid flow interrupting device of FIG. 9. It is a figure which shows the one-way valve arrange | positioned at the upper inflow path of FIG. It is a figure which shows that a fluid discharge port is connected to a fluid flow pipe. It is the schematic which shows the structure of the preset temperature variable apparatus added to the temperature sensitive type fluid flow interruption apparatus of FIG. FIG. 10 is a diagram illustrating a state in which the bellows contracts when the temperature of the flowing fluid in the housing reaches a set temperature in the temperature-sensitive fluid flow interrupting device of FIG. 9. FIG. 15 is a diagram illustrating a state in which the fluid in the pressure release chamber is transferred to the fluid storage tank following the contraction operation of the bellows in FIG. 14. FIG. 16 is a diagram illustrating a state in which the fluid in the valve chamber is transferred to the pressure release chamber following the operation of transferring the fluid in the pressure release chamber to the fluid storage tank in FIG. 15. It is a figure which shows the state from which the flow fluid in a fluid storage tank is discharged | emitted through a fluid discharge port following the transfer operation | movement to the pressure release chamber of the valve chamber fluid of FIG.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings so as to be easily implemented by those having ordinary skill in the art of the present invention. However, the present invention is not limited to this.

  FIG. 1 shows the configuration of a temperature-sensitive fluid flow interrupting device according to a first embodiment of the present invention, and FIG. 2 shows the temperature-sensitive fluid flow interrupting device of FIG. 1 where the temperature of the temperature-sensitive fluid reaches a set temperature. In the case, the operation of the temperature sensitive device is shown.

  As shown in FIG. 1, the temperature-sensitive fluid flow interrupting device according to the first embodiment of the present invention has an open portion 220 that is partially exposed to the outside, and a fluid (hereinafter referred to as “flow fluid”) inside. ) Through which the fluid flows in the fluid flow pipes 120 and 140, the housing 200, the fluid flowing in the housing 200 flows in, and a small amount of fluid flows in the fluid discharge chamber in accordance with the change in internal pressure. 240 includes a valve block 300 provided in the housing 200 so as to communicate with the open portion 220 of the housing 200 and a temperature sensor that generates a pressure difference in the valve block 300 according to a temperature change of the temperature-sensitive fluid 471. . In the embodiment of the present invention, when the flow fluid in the housing 200 reaches a set temperature at which the temperature of the temperature sensitive fluid 471 is discharged to the outside, a pressure difference is generated in the valve block 300 and the flow fluid in the valve block 300 is generated. Is discharged to the outside through a fluid discharge chamber 240 communicating with the opening 220 of the housing 200. Here, the set temperature means a temperature before the flowing fluid in the housing 200 is frozen. In the present invention, every time the temperature of the temperature-sensitive fluid becomes lower than the set temperature, the fluid flow pipe is prevented from freezing by discharging a small amount of the flow fluid in the fluid flow pipe to the outside.

  The temperature sensor includes a valve block 300 and a cap-shaped temperature sensor 420. The valve block 300 includes a valve chamber 340 and a reaction chamber 320 that communicate with each other. The temperature sensitive portion 420 is filled with a temperature sensitive fluid 471 and is provided on the upper portion of the valve block 300 by the holder 402. The reaction chamber 320 communicates with the temperature sensitive part 420, and the temperature sensitive part 420 is provided with a flange part 440 that expands or contracts due to condensation and expansion of the temperature sensitive fluid 471, and is filled in the temperature sensitive part 420. The temperature of the temperature sensitive fluid 417 is preferably always lower than the temperature of the flowing fluid in the housing 200. A piston member 460 that moves up and down by expansion and contraction of the flange portion 440 is provided inside the flange portion 440, and a spring 480 is fitted to the outer surface of the piston member 460 to pressurize the piston member 460 downward. ing.

  In the reaction chamber 320 of the valve block 300, the piston member 460 of the temperature sensitive part 420 moves up and down. The reaction chamber 320 communicates with the valve chamber 340 through the first flow path 310, the valve chamber 340 communicates with the fluid discharge chamber 240 through the discharge pipe 360, and the second flow path between the reaction chamber 320 and the discharge pipe 360. 314 is connected.

A piston valve 328 is interposed in the valve chamber 340, an upper inflow passage 322 for flowing a fluid in the housing 200, a rubber pad valve 324 provided so as to cover the discharge pipe 360, and a discharge pipe when the rubber pad valve 324 is opened. A lower inflow passage 326 provided to communicate with 360 is provided. In the drawing, reference numeral 316 which omits the description of the lower part of the rubber pad valve 324 is a sealing. The piston valve 328 is preferably always pressed downward by the spring 342. The piston valve 328 must pressurize the rubber pad valve 324 with a predetermined specified pressure, for example, a pressure of 1 to ³ kgf / m ² . If the rubber pad valve 324 is pushed at a pressure lower than this pressure, for example, 0.5 kgf / m ² , the piston valve 328 is lifted up and a phenomenon of fluid leakage occurs. This is to prevent this.

  In addition, a first valve body 380 is provided in the reaction chamber 320 so as to open and close the first flow path 310 by moving up and down by moving the piston member 460 up and down. The first valve body 380 includes a hollow member 382, an elastic rubber member 384 inserted into the lower portion of the hollow member 382, a spring 386 and a contact member 388 sequentially inserted into the upper portion of the hollow member 382. The contact member 388 is in elastic contact with the lower end of the piston member 460. The rubber member 384 is for increasing the airtightness of the first flow path 310.

  On the other hand, if the temperature-sensitive fluid 471 in the temperature-sensitive part 420 expands too much, the piston member 460 descends due to the expanded pressure, and a phenomenon that excessively presses the rubber member 384 below the first valve body 380 occurs. The deterioration of the airtightness due to the breakage of the member 384 and the discharge point of the flowing fluid to the extent pushed are changed. In the present invention, even if the piston member 460 pushes the first valve body 380 with an excessive pressure due to excessive expansion of the temperature-sensitive fluid 471, the spring 386 absorbs an excessive pressure, and the rubber member 384 and the first Damage to the valve body 380 will be prevented.

  On the other hand, the fluid discharge chamber 240 is provided with a second valve body 260 provided to open and close the discharge pipe 360. The second valve body 260 has a hollow member 262 and one end inserted into the lower portion of the hollow member 262. The spring 264 is attached so that the other end is attached to the open portion 220 of the housing 200 and pressurizes upward, and an elastic rubber member 266 inserted into the upper portion of the hollow member 262. The rubber member 266 is also for improving the airtightness of the discharge pipe 360.

  The temperature sensitive part 420 is filled with gas as the temperature sensitive fluid 471. Such gas may include Freon-based and non-Freon-based refrigerant gas generally used in a cooler. When the external temperature decreases and the gas condenses, a space is generated in the temperature sensitive portion 420, and the piston member 460 is raised by the spring 480 fitted to the piston member 460. As a result, the collar part 440 also expands. However, on the contrary, when the temperature rises and the gas expands, the piston member 460 descends and the flange 440 contracts. As described above, other temperature-sensitive fluids other than the above-described gases, such as acetone, alcohol, ethanol, etc., can be used as long as the temperature expands and contracts when the temperature decreases. Of course, methanol may be filled in the temperature sensitive part 420. When the temperature of the temperature-sensitive fluid 471 filled in the temperature-sensitive part 420 reaches the set temperature and condenses, the temperature-sensitive fluid flow interrupting device of the present invention configured as described above, as shown in FIG. As the piston member 460 rises due to the elasticity of 480, the flange 440 is extended, and at the same time, the first valve body 380 that has closed the first flow path 310 rises in the reaction chamber 320, and the first flow path 310 is opened and flows in through the upper inflow passage 322 of the valve chamber 340, and the flow fluid filled in the valve chamber 340 and the first flow path 310 starts to flow into the reaction chamber 320.

  However, since the piston valve 328 is interposed in the upper inflow passage 322, it flows into the valve chamber 340 through the upper inflow passage 322 rather than the amount of fluid flowing into the reaction chamber 320 from the valve chamber 340 through the first flow path 310. Much less to do. Thereby, the water pressure in the valve chamber 340, that is, the water pressure in the upper part of the rubber pad valve 324 is lowered. On the other hand, since the lower part of the rubber pad valve 324 is pressurized by the fluid flowing in through the lower inflow passage 326 formed in the lower part of the rubber pad valve 324, the pressure difference between the upper and lower parts around the rubber pad valve 324 is the center. Occurs. As a result, the rubber pad valve 324 rises as shown in FIG. 2, and the lower inflow passage 326 and the discharge pipe 360 communicate with each other. As a result, the flow fluid in the housing 200 flows into the discharge pipe 360, lowers the second valve body 260 of the fluid discharge port 240, and opens the discharge pipe 360, thereby discharging the flow fluid through the opening 220. As a result, the temperature of the flow fluid in the fluid flow pipes 120 and 140 is always maintained at a set temperature or higher, and the fluid flow pipes 120 and 140 are prevented from freezing.

  On the other hand, when the rubber pad valve 324 rises, the piston valve 328 interposed in the upper inflow passage 322 is pushed up, and the upper inflow passage 322 is closed. When the first valve body 380 gradually rises to open the second flow path 314, the flow fluid flowing from the valve chamber 340 into the reaction chamber 320 flows into the discharge pipe 360 through the second flow path 314.

Typically, if the fluid flow pipe is a water pipe, the water pressure of the water pipe is usually a value of about ² to 3 kgf / cm ² , so the flow velocity when the flow fluid, that is, water is discharged to the outside is very high. Very fast. Accordingly, since all the flow fluid flowing into the discharge pipe 360 through the second flow path 314 is discharged when the flow fluid is discharged according to the Bernoulli principle, the valve chamber 340 in which the upper inflow passage 322 is closed, the storage chamber 320, The inside of the two flow paths 314 is always maintained in a vacant state with no flow fluid.

  However, when the temperature-sensitive fluid 471 in the temperature-sensitive portion 420 falls below the set temperature, a small amount of the flowing fluid in the fluid flow pipes 120 and 140 is discharged through the open portion 220 of the housing 200 for a certain period of time. However, if 100% of the discharge amount defined in the initial discharge is not discharged, the discharged flow fluid may freeze and close the opening 220. Therefore, it is preferable that reducing the gap between the time point at which this is prevented and the time point at which the discharge is stopped and the time point at which the discharge is stopped, that is, starting and stopping the discharge smoothly can minimize the drainage of the discharged water. This is achieved by the first valve body 380 pushed by the piston member 460 in the reaction chamber 320 and the second valve body 260 of the fluid discharge chamber 240 in the first embodiment of the present invention. That is, since the contact member 388 of the first valve body 380 is pushed by the piston member 460 in a state where the contact member 388 is retained by the spring 386, the discharge can be started smoothly by raising the piston member 460 quickly. Further, the second valve body 260 is also pressurized upward by the spring 264, so that the discharge pipe 360 can be quickly closed to smoothly stop the discharge of the flowing fluid.

  FIG. 3 shows a configuration of a temperature-sensitive fluid flow interrupting device according to a second embodiment of the present invention. FIG. 4 shows a case where the temperature of the temperature-sensitive fluid reaches a set temperature in the fluid flow interrupting device of FIG. The operation of the temperature sensitive device is shown.

  The temperature-sensitive fluid flow interrupting device according to the second embodiment of the present invention shown in FIGS. 3 and 4 can adjust the discharge flow rate when the flow fluid is discharged at the initial stage. Since the configuration of the discharge flow rate regulator is added instead of the fluid discharge chamber of the embodiment, the same components as those of the embodiment of FIGS. The explanation was omitted.

  In the second embodiment, an exhaust flow rate regulator is provided in the second flow path 314 shown in FIGS. The discharge flow rate regulator includes a fluid storage chamber 520 and a second valve chamber 540 communicating with the fluid storage chamber 520. In the present embodiment, the discharge pipe 360 is configured such that the center thereof is an orifice pipe, the upper part thereof communicates with the second valve chamber 540, and the lower part thereof communicates with the fluid storage chamber 520.

  The fluid storage chamber 520 includes a valve member 522 provided to open and close the second flow path 314 and a spring 524 provided so as to pressurize the valve member 522 downward. The fluid flowing in the chamber 320 flows through the second flow path 314.

  The fluid storage chamber 520 is provided with a third flow path 362 communicating with the lower discharge pipe 360 at a predetermined height. When the valve member 522 rises above a predetermined height, it flows through the third flow path 362. The flowing fluid is discharged through the lower discharge pipe 360.

  On the other hand, the second valve chamber 540 has a configuration similar to that of the valve chamber 340. The second valve chamber 540 is provided so as to cover the piston valve 544 and the second flow path 314 by being interposed in the communication path 542 with the fluid storage chamber 520 so as to flow in the fluid flowing into the fluid storage chamber 520. Rubber pad valve 346. However, when the rubber pad valve 346 is opened, a negative pressure is generated in the second valve chamber 540 due to the flow velocity of the flowing fluid discharged through the discharge pipe 360, and a part of the flowing fluid is sucked through the second flow path 314. Thereafter, the rubber pad valve 346 is closed while the piston valve 544 is lowered by the spring 524.

  In this process, if the speed of the fluid is high, the flow fluid flowing into the discharge pipe 360 through the lower inflow passage 326 is not sufficient, so the temperature of the flow fluid inside the housing 200 gradually decreases and freezing occurs. As a method for preventing this, as shown in FIG. 5, a resistance shaft is provided in the second flow path 314 between the upper discharge pipe 360 and the second valve chamber 540 in order to delay the discharge of the flow fluid. A buffer chamber 600 in which 620 operates is preferably formed.

  The temperature-sensitive fluid flow interrupting device according to the embodiment of the present invention is configured such that the fluid always flows through the fluid flow pipe by repeating the above-described operation, so that there is no external power supply even when the external air temperature decreases. In addition, the fluid inside the fluid flow pipe is prevented from freezing, thereby preventing the fluid flow pipe from being frozen.

  FIG. 6 shows a configuration of a temperature-sensitive fluid flow interrupting device according to a third embodiment of the present invention.

  As shown in FIG. 6, the temperature-sensitive fluid flow interrupting device according to the third embodiment of the present invention includes a fluid flow pipe 712 in which an open part 722 that is partially exposed to the outside is formed and a fluid flows inside. The housing 720 provided between the inflow portion 712 and the discharge portion 714 of the 714, the flow fluid in the housing 720 flows in, and a small amount of flow fluid is opened through the fluid discharge port 724 in response to a change in internal pressure. A valve block 730 provided in the housing 720 so as to communicate with the portion 722, and a temperature sensor that generates a pressure difference in the valve block 730 according to a temperature change of the temperature-sensitive fluid 771.

  In the temperature-sensitive fluid flow interrupting device according to the third embodiment of the present invention, when the temperature of the temperature-sensitive fluid 771 reaches a set temperature, a pressure difference is generated in the valve block 730 by the temperature-sensitive portion 774 and the temperature in the valve block 730 The fluid is discharged to the outside through a fluid discharge port 724 communicating with the opening 722 of the housing 720. Here, the set temperature means a temperature before the fluid flowing in the housing 720 is frozen, and in the present invention, the outside air temperature becomes low, and a small amount of time each time the temperature of the temperature sensitive fluid 771 becomes the same as the set temperature. By discharging the flow fluid to the outside, the temperature of the flow fluid in the fluid flow pipes 712 and 714 is always maintained at a set temperature or higher, thereby preventing the fluid flow pipes 712 and 714 from being frozen.

  The valve block 730 is provided with a temperature sensitive chamber 740, a pressure release chamber 750, and a valve chamber 760. The temperature sensitive chamber 740 is provided in the open portion 722 of the housing 720, a temperature sensitive portion 774 having a flange portion 772 formed on the upper portion, a holder 776 that is vertically divided around the flange portion 772 of the temperature sensitive portion 774, a temperature The upper and lower communication pipes 777 and 779 provided so as to communicate the upper and lower portions of the sensitive chamber 740 with the fluid discharge port 724 function as a temperature sensitive device. The temperature sensitive portion 774 is filled with a temperature sensitive fluid 771, and the temperature of the temperature sensitive fluid 771 is preferably always lower than the temperature of the flowing fluid in the housing 720.

  A first piston valve 754 is provided in the pressure release chamber 750 to which pressure is applied by the fluid flowing into the housing 720 so as to open and close the communication passage 752 communicating with the temperature sensitive chamber 740. On the other hand, the second piston valve 762 is interposed in the valve chamber 760 to cover the upper inflow passage 764 that flows into the housing 720 and flows in fluid, the connection pipe 766 that is connected to the pressure release chamber 750, and the fluid discharge port 724. Thus, an upper inflow passage 764 and a rubber pad valve 768 provided below the connecting pipe 766 and a lower inflow passage 769 provided so as to communicate with the fluid discharge port 724 when the rubber pad valve 768 is opened are formed.

  A constant gap is formed between the upper portion of the flange portion 772 of the temperature sensitive portion 774 and the first piston valve 754, and the temperature sensitive portion 774 is filled with a fluid such as water that flows as the temperature sensitive fluid 771. Has been. The temperature-sensitive fluid 771 of this embodiment has a characteristic of expanding when the external temperature is low and contracting when the temperature is high. Accordingly, when the temperature of the external fluid decreases and the temperature sensitive fluid 771 expands, the flange 772 expands to raise the first piston valve 754, and when the temperature increases, the temperature sensitive fluid 771 contracts again and the first piston. Valve 754 is lowered. As described above, the temperature sensitive portion 774 can of course be filled with a temperature sensitive fluid other than the aforementioned fluid if it has a property of expanding when the temperature is low and contracting when the temperature is high. If the heat capacity of the temperature sensitive fluid 771 is not smaller than the heat capacity in the fluid flow pipe, the temperature of the temperature sensitive fluid in the temperature sensitive portion 774 is higher than the temperature of the flow fluid in the fluid flow pipe when the same heat energy is lost. Therefore, it is preferable that the temperature sensitive portion 774 is smaller than the fluid flow pipes 712 and 714.

  On the other hand, when the first piston valve 754 rises and the pressure in the pressure release chamber 750 is released, the valve chamber 760 connected to the pressure release chamber 750 through the connection pipe 766 flows into the housing 720 through the upper inflow passage 764. Fluid flows in. However, since the second piston valve 762 is interposed with a fine gap in the upper inflow passage 764, the amount of flow fluid flowing into the valve chamber 760 through the upper inflow passage 764 is very small. As a result, a much smaller amount flows in the valve chamber 760 than the amount that moves to the pressure release chamber 750 through the connecting pipe 766. As a result, the water pressure in the valve chamber 760, that is, the water pressure in the upper part of the rubber pad valve 768 is lowered, while the lower part of the rubber pad valve 768 is water pressure by the flowing fluid flowing in through the lower inflow passage 769 formed in the lower part of the rubber pad valve 768. Therefore, a difference in water pressure between the upper and lower sides of the rubber pad valve 768 is generated. When the water pressure difference is generated in this way, the rubber pad valve 768 expands upward as shown in FIG. 7 so that the lower inflow passage 769 and the fluid discharge port 724 communicate with each other. The flow fluid flows into the fluid discharge port 724 and then is discharged to the lower portion of the temperature sensitive chamber 740 formed in the opening 722 of the housing 720 through the lower inflow passage 769 connected to the fluid discharge port 724.

  The second piston valve 762 moves up and down along the upper inflow passage 764 in conjunction with the opening and closing of the rubber pad valve 768. Accordingly, foreign matter that can be accumulated between the wall surface of the upper inflow passage 764 and the second piston valve 762 can be removed, thereby improving the life and operation reliability of the flow fluid interrupting device of the present invention. . In the drawings, reference numerals 751 and 761 that are not described are rubber rings provided to provide airtightness to the first piston valve 754 of the pressure release chamber 750 and the portion of the valve chamber 760 where the second piston valve 762 is opened and closed. Indicates.

  In the third embodiment of the present invention, although not specifically illustrated, a one-way valve is installed in the upper inflow passage 764 of the valve chamber 760 so that the flow fluid flowing in through the upper inflow passage 764 flows backward. Of course, it is possible to prevent discharge and improve the reliability of the apparatus.

  Further, the third embodiment of the present invention can further include a set temperature variable device to adjust the opening / closing timing of the first piston valve 776 so that the set temperature can be varied. As shown in FIG. 8, the set temperature variable device 780 includes a holder 776 formed on the inner wall of the temperature sensitive chamber 740 so that the screw can be adjusted, and a screw portion formed on the outer surface of the holder 776 with the inner wall of the temperature sensitive chamber 58. The timing of the flow fluid in the pressure release chamber 750 flowing into the temperature sensitive chamber 740 can be adjusted by adjusting the screw. That is, if the space between the upper portion of the flange portion 772 and the first piston valve 754 is reduced as shown by the solid line in FIG. 8 by adjusting the screw, the temperature sensitive fluid 771 filled in the temperature sensitive portion 774 is slightly expanded. Even so, the first piston valve 754 that has closed the communication passage 752 by the pressure of the flowing fluid rises. As a result, the timing at which the fluid flowing into the pressure release chamber 750 flows into the temperature sensitive chamber 740 is advanced. On the other hand, if the distance is adjusted widely as indicated by the dotted line in FIG. 8, the communication passage 752 is closed if the temperature sensitive fluid 771 filled in the temperature sensitive portion 774 does not expand more. The first piston valve 754 does not rise. Therefore, the time when the fluid flowing in the pressure release chamber 750 flows into the temperature sensitive chamber 740 is delayed.

Typically, if the fluid flow pipe is a water pipe, the water pressure of the water pipe is usually about ² to 3 kgf / cm ^2, so the flow rate when the fluid is discharged to the outside is very fast. Therefore, a negative pressure is generated at the fluid outlet 724 after the fluid is discharged due to Bernoulli's principle. At this time, the fluid outlet 724 and the upper part of the temperature sensing chamber 740 communicate with each other through the upper communication pipe 777. Due to the pressure difference between the discharge port 724 and the temperature sensitive chamber 740, the fluid flowing in the upper part of the temperature sensitive chamber 740 also moves to the fluid discharge port 724 through the upper communication pipe 777 and is discharged through the fluid discharge port 724. As described above, since all the fluid in the temperature sensitive chamber 740 is discharged through the fluid discharge port 724, the upper communication pipe 777 is always kept clean.

  Hereinafter, the operation of the temperature-sensitive fluid flow interrupting device according to the third embodiment of the present invention configured as described above will be described as follows.

  When the external temperature is equal to or higher than the set temperature, the flow fluid flowing into the housing 720 through the inflow portion 712 of the fluid flow pipe is filled into the valve chamber 760 and the pressure release chamber 750 by water pressure, as shown in FIG. The temperature sensitive fluid 771 filled in the temperature sensitive portion 774 has a constant volume, and the first piston valve 754 maintains a constant gap with the flange portion 772 above the temperature sensitive portion 774 to release the pressure. The flow fluid filled in the chamber 750 is in close contact with the rubber ring to close the communication passage 752. In this state, the temperature of the outside becomes low, and the temperature of the temperature-sensitive fluid 771 filled in the temperature-sensitive portion 774 reaches a set temperature that allows the flowing fluid in the housing 720, that is, water to be discharged before freezing. Then, the temperature sensitive unit 774 senses this. That is, since the size of the temperature sensitive portion 774 is smaller than the size of the fluid flow tube, the temperature of the temperature sensitive fluid 771 in the temperature sensitive portion 774 is lower than the temperature of the flow fluid in the fluid flow tube. When the external temperature becomes low and the temperature of the flowing fluid freezes (0 ° C.), the temperature sensitive fluid 771 in the temperature sensitive portion 774 begins to freeze before the flowing fluid. However, the density of the frozen temperature sensitive fluid 771 is about 10% lower than the density of the flowing fluid (since the ice mass is about 10% larger than the volume of water at the same mass), the temperature sensitive enough to generate frost. The volume of the fluid increases and the collar 772 expands. As described above, the first piston valve 754 is pushed up by the expansion of the flange portion 772 beyond a predetermined gap, so that the first piston valve 754 rises to open the communication path 752. Then, the fluid flowing in the pressure release chamber 750 flows into the temperature sensitive chamber 740 through the communication passage 752, and then is discharged to the fluid discharge port 724 through the upper communication pipe 777. At this time, since the pressure release chamber 750 communicates with the valve chamber 760 through the connection pipe 766, the fluid flowing in the valve chamber 760 moves to the pressure release chamber 750 through the connection pipe 766.

  On the other hand, the amount of fluid flowing into the valve chamber 760 through the upper inflow passage 764 is that the second piston valve 762 is interposed in the upper inflow passage 764. Flows in through the gap. Accordingly, the valve chamber 760 flows in an amount much smaller than the amount moving to the pressure release chamber 750 through the connecting pipe 766. Thereby, the water pressure in the valve chamber 760, that is, the water pressure in the upper part of the rubber pad valve 768 is lowered. However, since the water pressure is applied to the lower part of the rubber pad valve 768 by the fluid flowing into the lower inflow passage 769 formed at the lower part of the rubber pad valve 768, a difference in water pressure between the upper and lower parts occurs around the rubber pad valve 768. As a result, the rubber pad valve 768 expands upward as shown in FIG. 7 so that the lower inflow passage 769 and the fluid discharge port 724 communicate with each other. As a result, the fluid flowing in the housing 720 flows into the lower inflow passage 769, is discharged to the fluid discharge port 724, and is discharged to the lower portion of the temperature sensitive chamber 740 through the lower communication pipe 79.

At this time, since the water pressure of the fluid flow pipe, which can be said to be a water pipe, is usually about ² to 3 kgf / cm ² , the flow rate when the fluid is discharged to the outside is very fast. Therefore, a negative pressure is generated at the fluid outlet 724 after the fluid is discharged according to the Bernoulli principle. At this time, since the fluid discharge port 724 and the upper part of the temperature sensitive chamber 740 are communicated with each other by the upper communication pipe 777, the upper part of the temperature sensitive chamber 740 is caused by the pressure difference between the fluid discharge port 724 and the upper part of the temperature sensitive chamber 740. Also, the fluid that has been moved to the fluid discharge port 724 through the upper communication pipe 777 and discharged to the lower part of the temperature sensitive chamber 740 through the lower communication pipe 79.

  As described above, the flow fluid in the upper part of the temperature sensitive chamber 740 and the fluid in the housing 720 are discharged to the fluid discharge port 724 and discharged to the lower part of the temperature sensitive chamber 740 through the lower communication pipe 779. It contacts the lower part of 774. Since the temperature of the discharged flow fluid is higher than the temperature of the temperature sensitive fluid 771 in the temperature sensitive portion 774, contact with the lower portion of the temperature sensitive portion 774 of the discharged flow fluid causes the inside of the temperature sensitive portion 774. The frozen ice melts. As a result, the volume of the flowing fluid inside the temperature sensitive portion 774 decreases and the collar portion 772 also contracts, and as a result, the first piston valve 754 is no longer pushed up. Accordingly, the first piston valve 754 closes the communication passage 752 again. Further, the water pressure in the valve chamber 760 gradually increases, and when the water pressure difference between the upper and lower sides of the rubber pad valve 768 disappears, the rubber pad valve 768 returns to the original state and the fluid discharge port 724 is closed to interrupt the flow fluid discharge. To do.

  The temperature-sensitive fluid flow interrupting device of the present invention allows fluid to always flow through the fluid flow pipe by repeating the above-described operation, so that the fluid flow can be performed without external power supply even when the external air temperature decreases. By preventing the fluid inside the pipe from freezing, the fluid flow pipe is prevented from being frozen.

  FIG. 9 shows a configuration of a temperature-sensitive fluid flow interrupting device according to a fourth embodiment of the present invention, and FIG. 10 is a modified embodiment of the temperature-sensitive device of FIG. FIG. 11 shows a one-way valve attached to the upper inflow passage of FIG. 9, and FIG. 12 shows a water faucet attached to the fluid discharge port. FIG. 13 shows the configuration of a set temperature variable device that can be added to the configuration of FIG.

  As shown in FIG. 9, the temperature-sensitive fluid flow interrupting device according to the fourth embodiment of the present invention is provided between the inlet portion 812 and the outlet portion 814 of the fluid flow pipes 812 and 814 through which the fluid flows. A communication pipe 882 is formed so that a flow fluid in the housing 820 and a flow fluid in the housing 820 flow in and a small amount of the flow fluid is discharged to the outside of the housing 820 through the fluid discharge port 822 in accordance with a change in internal pressure. And a temperature sensor 890 provided in the communication pipe 882 of the valve block 880 so as to increase or decrease the pressure in the valve block 880 in accordance with the temperature change of the flowing fluid in the housing 820.

  The temperature sensitive fluid flow interrupting device according to the fourth embodiment of the present invention increases the pressure in the valve block 880 due to the contraction of the temperature sensitive device 890 when the temperature of the fluid flowing in the housing 820 reaches a set temperature. The flow fluid in the valve block 880 is configured to be discharged to the outside of the housing 820 through the fluid discharge port 822. Here, the set temperature means a temperature before the flowing fluid in the housing 200 is frozen. In the present invention, the temperature of the fluid in the fluid flow pipes 812 and 814 is discharged by discharging a small amount of the fluid to the outside whenever the temperature of the outside fluid becomes low and the temperature of the fluid in the housing 820 becomes equal to the set temperature. Is always maintained above the set temperature to prevent the fluid flow pipes 812, 814 from freezing.

  The valve block 880 includes a fluid storage tank 830 that communicates with the communication pipe 882, a pressure release chamber 840 that communicates with the fluid storage tank 830 through the communication portion 832, a seesaw member 850 that is hinged to the communication portion 832, and a pressure release chamber. 840 and a valve chamber 870 connected through a connecting pipe 836. The fluid flowing in the housing 820 flows through the upper inflow passage 872 formed on one side of the valve chamber 870 and fills the valve chamber 870, the connecting pipe 836 and the pressure release chamber 840.

  The pressure release chamber 840 is provided with a first piston valve 842 so as to open and close the communicating portion 832, and the seesaw member 850 has one end 852 that contracts and expands the temperature sensitive portion 890 so as to open and close the communicating portion 832. The other end 854 is interlocked with the opening and closing of the first piston valve 842 of the pressure release chamber 840.

  The temperature sensor 890 includes a shaft 892 provided so as to move up and down through the communication pipe 882 of the valve block 880, a pressure compensation spring 894 that pressurizes the shaft 892 in one direction, and a temperature sensitive that contracts and expands according to a temperature change. A gas storage chamber 896 in which gas is stored as the fluid 871 and a bellows 898 attached to the shaft so that the shaft 892 moves up and down by contraction and expansion of the temperature sensitive fluid 871 are included. The bellows 898 is preferably provided so that the gas stored in the gas storage chamber 896 is sealed so as not to pass through the communication pipe 882.

  In the present embodiment, it has been described that it is sensitive to the temperature of the fluid flowing in the housing 820. However, unlike this, the fluid flow can be interrupted in response to the temperature of an external remote location. In this case, the gas 871 stored in the gas storage chamber 896 is supplied from the temperature-sensitive gas source 910 located at a remote place through the gas connection pipe 895. In this embodiment, as the gas stored in the gas storage chamber 896, in principle, any gas whose pressure changes according to the temperature can be used, and is saturated in a use temperature range (a state where both liquid and gas exist). The gas at is preferred. As such a gas, Freon type and non-Freon type refrigerant gas generally used in a cooler can be used.

  When the temperature outside the fluid flow pipes 812 and 814 becomes low and the temperature of the flow fluid in the housing 820 reaches the set temperature, the temperature sensitive fluid 871 filled in the gas storage chamber 896 is condensed. As a result, the pressure compensation spring 894 and the bellows 898 are extended and the collar of the bellows 898 is extended, so that the shaft 892 and one end 852 of the seesaw member 850 are raised upward about the hinge shaft 851. On the other hand, the other end 854 of the seesaw member 850 descends downward about the hinge shaft 851 and pushes the first piston valve 842 in a state where the communication portion 832 is closed by the inflow pressure of the flowing fluid. Accordingly, by opening the communication portion 832, the flow fluid filled in the pressure release chamber 840 flows into the fluid storage tank 830 through the communication portion 832 and is stored.

  On the other hand, when the temperature outside the fluid flow pipes 812 and 814 becomes high and the temperature of the flow fluid in the housing 820 becomes higher than the set temperature, the temperature sensitive fluid 871 filled in the gas storage chamber 896 is changed. Inflate. As a result, the pressure compensation spring 894 and the bellows 898 are compressed again, and the bellows 898 is wrinkled, so that the shaft 892 and the one end 852 of the seesaw member 850 are lowered again around the hinge shaft 851. The other end 854 of 850 rises upward about the hinge shaft 851. Accordingly, the opened first piston valve 842 is raised by the inflow pressure of the flow fluid and closes the communication portion 832, so that the flow fluid filled in the pressure release chamber 840 is stored in the fluid through the communication portion 832. Inflow into the tank 830 is blocked.

  FIG. 10 shows an alternative embodiment of a temperature sensitive device that uses gas as the temperature sensitive fluid. As shown in FIG. 10, the temperature sensor 890 according to the modified embodiment may be configured so that the deformable member 900 deformed according to the temperature change is attached to the shaft 892 and the support member 902 and the shaft 892 is moved up and down. Since it operates in the same manner as the embodiment, its detailed description is omitted. As the deformable member 900, for example, a bimetal, a shape memory alloy, or a material having a large thermal expansion coefficient can be used.

  In FIG. 10, the shaft 892 and the first piston valve 842 are configured to be interlocked by a seesaw member 850. However, although not shown directly in the case of this modified embodiment, the direction of movement can be changed up and down when the deforming member 900 contracts and expands, so that the shaft 892 can be formed without the configuration of the seesaw member 850. Of course, the first piston valve 842 can be interlocked.

  Further, referring to FIG. 9, the valve chamber 870 includes an upper inflow passage 872 in which the second piston valve 876 is interposed. The upper inflow passage 872 is connected to the pressure release chamber 840 through a connection pipe 836. ing. A rubber pad valve 860 is provided at the lower portion of the upper inflow passage 872 and the connecting pipe 836 so as to open and close the fluid discharge port 822. When the rubber pad valve 860 is opened, the lower inflow is communicated with the fluid discharge port 822. A passage 858 is formed. The fluid in the housing 820 flows into the valve chamber 870 through the upper inflow passage 872, but since the second piston valve 876 is interposed with a fine gap in the upper inflow passage 872, the valve chamber is passed through the upper inflow passage 872. The amount of flow fluid entering 870 is negligible. At this time, it is preferable that the second piston valve 876 is moved up and down along the upper inflow passage 872 in conjunction with the opening and closing of the rubber pad valve 860. The foreign matter that can be accumulated between the wall surface of the upper inflow passage 872 and the second piston valve 876 can be removed by raising and lowering the upper inflow passage 872 of the second piston valve 876 in conjunction with opening and closing of the rubber pad valve 860. This will improve the life and operational reliability of the fluid flow interrupter of the present invention. In the drawings, reference numerals 744 and 778, which are not described, are rubber rings provided to provide airtightness to the first piston valve 842 of the pressure release chamber 840 and the second piston valve 876 of the valve chamber 870, respectively. Is shown.

  As shown in FIG. 11, a one-way valve 862 is provided in the upper inflow passage 872 of the valve chamber 870 to prevent the flowing fluid flowing through the upper inflow passage 872 from flowing backward. Such a one-way valve 862 includes a valve and a spring that supports the valve, and the spring used at this time has a low elastic coefficient, so that the flow fluid in the housing 820 flows in through the upper inflow passage 872. However, the flow fluid in the valve chamber 870 is prevented from flowing back to the housing 820, thereby improving the reliability of the apparatus.

  As shown in FIG. 12, the fluid outlet 822 does not lead to the exterior of the housing 820 and may be connected to a water tap 810 provided to the inlet 812 or outlet 814 of the fluid flow tube.

  Meanwhile, the temperature-sensitive fluid flow interrupting device according to the embodiment of the present invention can vary the set temperature at which the fluid flowing in the housing 820 is discharged. The simplest method is to use pressure compensating springs 894 having different elastic coefficient values. However, when the pressure compensation spring 894 having a predetermined elastic modulus value is already provided, the temperature-sensitive fluid flow interrupting device according to the embodiment of the present invention may further include a set temperature variable device that can change the set temperature. .

The temperature setting device 920 is formed on the lower side surface of the shaft 892 so as to adjust the gradient of the seesaw member 850 of the valve block 880 coupled to the lower end of the shaft 892 of the temperature sensor 890, as shown in FIG. One end 852 of the seesaw member 850 may be inserted into the formed guide hole 884, and the adjustment screw 922 assembled with a screw groove 886 formed at the lower end of the shaft 892 may be used.

  By adjusting the adjustment screw 922, one end of the seesaw member 850 inserted into the hole 884 of the shaft 892 is guided in the guide hole 884 and moved up and down, so that the seesaw member 850 is inclined around its hinge shaft 851. Is adjusted. With such a configuration, when the adjustment screw 922 is adjusted such that one end 852 of the seesaw member 850 is further tilted about the hinge shaft 851 and the one end 851 is further raised upward, the other end 854 is further lowered downward. Thereby, even when the outside of the fluid flow pipes 812 and 814 is slightly cold and the temperature of the fluid flowing in the housing 820 is slightly lowered, the rising point of the shaft 892 is advanced. Therefore, the opening time of the first piston valve 842 in a state where the communication portion 832 is closed by the pressure of the flowing fluid is advanced. On the contrary, when the adjustment screw 922 is adjusted so that the gradient of the seesaw member 850 is lowered, the opening time of the first piston valve 842 is delayed.

  The fluid storage tank 830 communicates with external air through an air passage 834 that communicates with external air, communicates with the fluid discharge port 822 through the discharge passage 838, and generates a negative pressure at the fluid discharge port 822. The flowing fluid flows into the fluid discharge port 822 through the discharge passage 838 and is discharged. When the discharge of the fluid flowing in the fluid storage tank 830 is completed, the external air flowing in through the air passage 834 flows to the fluid discharge port 822 through the discharge passage 838. Accordingly, since all the flow fluid remaining in the discharge passage 838 is discharged, the discharge passage 838 is always kept clean.

  Hereinafter, the operation of the temperature-sensitive fluid flow interrupting device according to the fourth embodiment of the present invention configured as described above will be described with reference to FIGS.

  The fluid flowing inside the housing 820 fills the valve chamber 870 and the pressure release chamber 840 with water pressure. In the state of the apparatus shown in FIG. 9 in this state, when the outside air temperature becomes low and the temperature of the flowing fluid in the housing 820 reaches the set temperature, the temperature sensor 890 senses this. That is, the gas 871 in the gas storage chamber 896 condenses and the pressure compensation spring 894 and the bellows 898 expand as shown in FIG. 14, and at the same time, the shaft 892 and one end 852 of the seesaw member 850 As shown in FIG. On the other hand, the other end 854 of the seesaw member 850 pushes the first piston valve 842 that has closed the communication portion 832 by the pressure of the flowing fluid that descends about the hinge shaft 851 and flows into the pressure release chamber 840. Then, the first piston valve 842 descends to open the communication portion 832 as shown in FIG. Then, the pressure release chamber 840 communicates with the fluid storage tank 830 through the communication portion 832 due to the lowering of the first piston valve 842, so that the fluid in the pressure release chamber 840 is transferred to the fluid storage tank 830. At the same time, the fluid flowing in the valve chamber 870 also moves to the pressure release chamber 840 through the connecting pipe 836.

  On the other hand, since the second piston valve 876 is interposed in the upper inflow passage 872, the flow fluid flowing into the valve chamber 870 through the upper inflow passage 872 passes through the upper inflow passage 872 and the gap with the second piston valve 876. Flows in through. Accordingly, the valve chamber 870 flows in an amount much smaller than the amount that moves to the pressure release chamber 830 through the connecting pipe 836. Thereby, the water pressure in the valve chamber 870, that is, the water pressure in the upper part of the rubber pad valve 860 is lowered. However, since the water pressure is applied to the lower part of the rubber pad valve 860 by the flowing fluid flowing into the lower inflow passage 874 formed at the lower part of the rubber pad valve 860, a difference in water pressure between the upper and lower parts occurs around the rubber pad valve 860. . As a result, the rubber pad valve 860 expands upward as shown in FIG. 17 so that the lower inflow passage 874 and the fluid discharge port 822 communicate with each other, so that the fluid in the housing 820 flows into the lower inflow passage. The fluid is discharged to the outside through the fluid discharge port 822 by flowing into 874.

Typically, if the fluid flow pipe is a water pipe, the water pressure of the water pipe is usually about ² to 3 kgf / cm ^2, so the flow rate when the fluid is discharged to the outside is very fast. Therefore, a negative pressure is generated at the fluid outlet 822 after the fluid is discharged according to the Bernoulli principle. At this time, since the fluid discharge port 822 and the fluid storage tank 830 communicate with each other through the discharge passage 838, the fluid in the fluid storage tank 830 is also discharged due to the pressure difference between the fluid discharge port 822 and the fluid storage tank 830. It moves to the fluid discharge port 822 through the passage 838 and is discharged through the fluid discharge port 822. When all the fluid in the fluid storage tank 830 is discharged through the fluid discharge port 822 in this way, the fluid storage tank 830 communicates with the external air through the discharge passage 838, so that the external air flows through the air passage 834. 822. Since all the fluid remaining in the discharge passage 838 is cleaned by the air flow, the discharge passage 838 is always kept clean.

  When the outside air temperature rises, the fluid sufficiently flows into the pressure release chamber 840, or the bellows 898 extended by the elasticity of the pressure compensation spring 894 in the bellows 898 contracts, the first piston valve 842 is The communication pipe 832 is gradually closed. As a result, the water pressure in the valve chamber 870 gradually increases and becomes equal to the water pressure at the lower end of the rubber pad valve 860, and when the water pressure difference disappears, the rubber pad valve 860 contracts, so that the lower inflow passage 874 and the fluid discharge port 822 The fluid discharge is interrupted to cut off the communication.

  The temperature-sensitive fluid flow interrupting device of the present invention allows fluid to always flow through the fluid flow pipe by repeating the above-described operation, so that the fluid flow can be performed without external power supply even when the external air temperature decreases. By preventing the fluid inside the pipe from freezing, the fluid flow pipe is prevented from being frozen.

  The temperature-sensitive fluid flow interrupting device according to the present invention has been described above as a specific embodiment. However, this is merely an example, and the present invention is not limited thereto, and is disclosed in the present specification. It should be construed as having the widest range according to the basic idea, and those skilled in the art can easily change the material, size, etc. of each component depending on the application field.

  In addition, the disclosed embodiments can be combined / replaced to adopt a structure that is not properly shown, but this does not depart from the scope of the present invention. In addition, those skilled in the art can easily change or modify the embodiments disclosed based on the present specification, and it is obvious that such changes or modifications are also within the scope of the present invention.

Claims (24)

A temperature sensitive fluid flow interrupting device,
A housing provided between an inflow portion and a discharge portion of a fluid flow pipe in which a fluid flows inside;
A valve block provided in the housing so as to flow fluid into the housing and discharge a part of the fluid to the outside of the housing according to a change in internal pressure;
A temperature sensor for generating a pressure difference in the valve block in accordance with a temperature change of the temperature-sensitive fluid filled therein;
Temperature-sensitive fluid flow interrupting device including: The temperature sensor is
A temperature sensitive portion filled with the temperature sensitive fluid and provided at an upper portion of the valve block; a reaction chamber provided in the valve block to communicate with the temperature sensitive portion; and the flow fluid in the housing. A valve chamber provided inside the valve block so as to flow in, a valve pipe communicating with the housing, a first flow path communicating between the reaction chamber and the valve chamber, the reaction chamber, and the discharge A second flow path communicating with the tube,
When the temperature sensitive fluid reaches a set temperature, the flow fluid that has flowed into the valve chamber flows into the reaction chamber by the operation of the temperature sensitive portion, and flows into the valve chamber due to a pressure difference generated in the valve chamber. The temperature-sensitive fluid flow interrupting device according to claim 1, wherein the flow fluid in the housing is discharged to the discharge pipe. The temperature sensitive part is
A collar provided to expand and contract by condensation and expansion of the temperature sensitive fluid;
A piston member provided so as to be moved up and down by expansion and contraction of the hook part inside the hook part;
A spring fitted to the outer surface of the piston member to pressurize the piston member;
The temperature-sensitive fluid flow interrupting device according to claim 2, comprising: The reaction chamber is
The first member is composed of a hollow member, an elastic rubber member inserted into a lower portion of the hollow member, and a spring and a contact member sequentially inserted into the upper portion of the hollow member, and is lifted and lowered by raising and lowering the piston member. Including a first valve body provided to open and close the flow path;
4. The temperature-sensitive fluid flow according to claim 3, wherein the contact member elastically contacts with a lower end portion of the piston member, and the second flow path is opened and closed by raising and lowering the first valve body. Intermittent device. The valve chamber is
An upper inflow passage through which a fluid flows into the housing through a piston valve;
A rubber pad valve provided to open and close the discharge pipe;
The temperature-sensitive fluid flow interrupting device according to claim 2, comprising a lower inflow passage provided to communicate with the discharge pipe when the rubber pad valve is opened.   The temperature-sensitive fluid flow interrupting device according to claim 2, wherein the temperature-sensitive fluid includes a fluid that contracts when the temperature decreases and expands when the temperature increases. The discharge pipe includes a fluid discharge pipe having a second valve body provided to open and close the discharge pipe;
The second valve body includes a hollow member, a spring having one end inserted into the lower portion of the hollow member, and the other end attached to the open portion of the housing and attached to pressurize upward, and the hollow member 3. The temperature-sensitive fluid flow interrupting device according to claim 2, wherein the temperature-sensitive fluid flow interrupting device is constituted by an elastic rubber member inserted in an upper part. The second flow path includes a fluid storage chamber, and an exhaust flow rate regulator composed of a second valve chamber communicating with the fluid storage chamber,
3. The temperature according to claim 2, wherein the discharge pipe has a central portion configured as an orifice pipe, an upper portion thereof communicates with the second valve chamber, and a lower portion thereof communicates with the fluid storage chamber. Sensitive fluid flow interrupting device. In the fluid storage chamber,
A valve member provided to open and close the second flow path, a spring provided to pressurize the valve member downward, and a third flow path communicating with a lower portion of the discharge pipe are provided,
When a certain pressure is generated in the flow fluid in the reaction chamber and the valve member is raised, the flow fluid in the reaction chamber flows in through the second flow path or is discharged through the lower discharge pipe through the third flow path. The temperature-sensitive fluid flow interrupting device according to claim 8.   9. The second valve chamber includes a piston valve interposed in a communication path with the fluid storage chamber and a rubber pad valve provided to open and close the second flow path. The temperature-sensitive fluid flow interrupting device as described.   The temperature sensitive fluid is filled with the temperature sensitive fluid, and a flange is formed so that the temperature of the temperature sensitive fluid is lower than the temperature of the flowing fluid in the housing, and the temperature of the filled temperature sensitive fluid The temperature-sensitive fluid flow interrupting device according to claim 1, further comprising a temperature-sensitive unit that generates a pressure difference in the valve block in response to a change. The valve block is
The temperature-sensitive part is provided, and a holder that supports the temperature-sensitive part so as to be partitioned vertically with a flange part of the temperature-sensitive part as a center, and the fluid outlet and the upper and lower parts communicate with each other. A temperature sensitive chamber including upper and lower communicating pipes provided;
A pressure release chamber comprising a first piston valve provided to open and close a communication passage communicating with the temperature sensitive chamber, and configured to be pressurized by a flowing fluid flowing into the housing;
An upper inflow passage through which a fluid flows into the housing through the second piston valve, a connection pipe connected to the pressure release chamber, and the upper inflow passage and the connection pipe so as to cover the fluid discharge port And a valve chamber in which a lower inflow passage is provided so as to communicate with the fluid discharge port when the rubber pad valve is opened. Temperature sensitive flow fluid interrupting device.   The size of the temperature sensitive part is smaller than the size of the flow fluid pipe so that the temperature of the temperature sensitive fluid is maintained lower than the temperature of the flow fluid. Temperature sensitive flow fluid interrupting device.   The temperature-sensitive flow fluid interrupting device according to claim 12, further comprising a set temperature varying device so that the set temperature can be varied.   15. The temperature-sensitive flow fluid interrupting device according to claim 14, wherein the set temperature variable device is the holder formed on the inner wall of the temperature-sensitive chamber so that the screw can be adjusted.   The temperature-sensitive fluid flow interrupting device according to claim 11, wherein the temperature-sensitive fluid includes a fluid that expands when the temperature decreases and contracts when the temperature increases. The valve block is
A communication pipe formed to discharge the flow fluid to the outside of the housing;
A fluid storage tank that communicates with the communication pipe and stores a flow fluid flowing into the housing;
A pressure release chamber comprising a first piston valve that is filled with a flowing fluid flowing into the housing and is provided to open and close the communicating portion communicating with the fluid storage tank;
A seesaw member hinged in the communication portion so that one end is interlocked with contraction and expansion of the temperature sensitive portion and the other end is interlocked with opening and closing of the first piston valve of the pressure release chamber;
An upper inflow passage through which a fluid flows in the housing through the second piston valve, a connection pipe connected to the pressure release chamber, and the upper inflow passage and the connection pipe so as to cover the fluid discharge port A rubber pad valve provided at a lower portion of the valve chamber, and a valve chamber having a lower inflow passage formed to communicate with the fluid discharge port when the rubber pad valve is opened,
The temperature-sensitive fluid flow interrupting device according to claim 1, comprising: The temperature sensor is
A shaft provided in the communication pipe and provided so as to move up and down through the communication pipe;
A pressure compensating spring that pressurizes the shaft in one direction;
The gas storage chamber for storing a gas that contracts and expands in response to a temperature change, and a bellows attached to the shaft so that the shaft moves up and down by the contraction and expansion of the gas. The temperature-sensitive fluid flow interrupting device according to claim 17.   The temperature sensor is provided in the communication pipe, and includes a shaft provided so as to move up and down through the communication pipe, and a deformable member attached to the shaft so that the shaft moves up and down according to a temperature change. The temperature-sensitive fluid flow interrupting device according to claim 17.   The temperature-sensitive fluid flow interrupting device according to claim 19, wherein the deformable member is one of a bimetal, a shape memory alloy, and a material having a large thermal expansion coefficient.   The temperature-sensitive fluid flow interrupting device according to claim 17, wherein the temperature-sensitive fluid includes a fluid that contracts when the temperature decreases and expands when the temperature increases.   The temperature-sensitive fluid flow interrupting device according to claim 18, further comprising a set temperature changing device so that the set temperature can be changed.   23. The temperature sensitive type according to claim 22, wherein the set temperature variable device includes an adjusting screw that is coupled to a lower end portion of the shaft of the temperature sensitive portion and adjusts a gradient of a seesaw member of the valve block. Fluid flow interrupting device.   The fluid storage tank is provided with an air passage communicating with external air and a discharge passage communicating with the fluid discharge port, and the flow fluid stored in the fluid storage tank is generated by a negative pressure generated at the fluid discharge port. The temperature-sensitive fluid flow interrupting device according to claim 17, wherein the fluid is discharged into the fluid discharge port through the discharge passage.

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